As a environmental health professional, fingers in your water should be the least of your concern. You should see what the kitchen staff does. Check out your favorite resturant inspectoin scores @
http://www.healthspace.ca/vdh. Ther are also good vids at
http://www.healthinspections.com/index.cfm. Some of the stuff I've seen is nasty and I can remember working at resturant as a kid.